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" N@ do@ UfNrrl-znf STATES PATENT Ferca.,

CHARLES WILHELM, OF NEW YORK, AND FREDERIC EOAUBERT, OF BROOK- LYN,VNEW YORK, ASSIGNORS TO SAID EOAUBERT. 1 4

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SPECIFICATION forming part of Letters Patent No. 531,455, dated December 25, 1894.

Appl-:mien inea' nay 2s, 1894.

To all whom t may concern:

Be it known that we, CHARLES WILHELM, of the city and county of New York, and FRED- ERIC ECAUBERT, residing at Brooklyn, in the county of Kings-State of New York,citizens of the United States, have invented an Improvement in Tools for Ornamenting Watchcases and Analogous Articles, of which the following is a specification.

In Letters PatentcNo. 472,490, gran ted April. 5, 1892, to C. Wilhelm, a die is represented for receiving-a watch 'case lid or back and a roller upon a suitable support for acting upon the interior surface of such lid and spreading the metalland pressingit into the ornamental surface of the die. In a tool of this character difliculty has been experienced in properly finishing the interior surface of the lid within the periphery'or outer. portion of such case, and the present improvement is made with reference to giving facility in the nianipulation of the roller which `is irst made use of within the lid, and to Vsupporting the second roller that nishes the interior ofthe lid near the edges thereof. We make use of a conical roller in a stock or holder somewhat similar to that in aforesaid patent and by which said tool is allowed to act from the center of thecase at the inside toward the outer edges of the case for'the spreading of the metal and the forcingof the same into the ornaments onthe interior surface of the die, and this roller is then removed and' asecond roller introduced having the axis of the roller substantially parallel to the axis of rotation of the die and its chuck upon the. mandrel, so that such roller acts within the lid to spread the metal laterally and ll the die completely around theouter edges of the lid, and this roller is effectually supported as it revolves by an annular shoulder, so-that the convex surface of the roll presses Vthe metal backwardly at the rounding portion of- -the lid adjacent to the periphery, so as to cause the metal to thoroughly ll the ornaments of the die and thereby be fully perfected by the 4 rolling operations.

In the drawings, Figure 1. represents the dies made use of by us in section, together with Serial No. 512,156- (N model.)

the roller and its support that is made useof 5o:

' in Patent No. 362,615', granted May lO, 1887,

to F. Ecaubert.

The back die A is adapted to receiving the 6o ornamenting die C, the recess of which is to be of the size and shape corresponding to the `article to be produced, and 4the interior surface is more or less ornamented according to the ornaments that are to be placed upon the watch case lid or other article.

The front dieB is open having an edge 2 that may be slightly beveled and against which the nearly `flat surface of the Watch case lid, bezel or other article isformed, andthe open- 7o ing within this edge is tonearly correspond to the size of the inturned edge or snap of the Watch case lid or similar article, and at 3 there is an annular shoulder around within the opening of the front die B.

We have represented the blank that forms lthe Watch case lid or other article at D, and

we remark that it is to be struck up in dies in any ordinary manner so as to be approximately of the shape ultimately required so 8o that such blank can be inserted into the 40rnamenting die C, and then the edge 2 of the die B will bear against the edge o'f such blank to hold the blank into its place in the die C While being acted upon by the roll hereinafter 8 5 described.

After the blank D, has been placed in the dies it is usually necessary'to act upon the samefrom the centerroutwardly by a'conical Vroll similar to that in"the aforesaid patent to 9o form the lid or back except the outer or peripheral portions. y

The pin I-I is adapted to lit the interior of l. the finishing roll I, and upon which pin H the finishing roll I is free to revolve, and the end of the finishing rollI is convex, as shown at 10 with a beveled or conical edge 11 or of other desired shape adapted to nish the interior of the watch case lid or other article immedi-l ately adjacent to the surface 2 of the open front die B, the convex surface 10 of the roll being adapted to finish the rounding portion of the lid D as the dies and roll revolve together, but in order to prevent the metal of the lid pressing the roll I outwardly so that the metal of the lid may not be of uniform thickness, We support such finishing roll l by the annular shoulder 12 of such roll I resting upon the annular shoulder 3 of the front die B, as indicated in Fig. l, it being understood that the pin I-I and roll I are moved laterally and bodily after the shoulder 12 rests upon the shoulder 3 and the necessary force is applied in the lateral direction for linishing up the interior of the lid and pressing the metal thereof fully into the ornaments upon the surface of the ornamenting die C, and at the same time the periphery of thelid is filled out perfectly, and the face of the lid which comes in contact with the Watch case center is also completely finished, and the internal edge forming the snap of the case is also completed so as to be adapted for use or to be slightly turned as usual in fitting the snaps of the case together.

It is usually advantageous to make the roll I in one piece, but the cylindrical portion of such roll may be separate from the conical part.

upon the open face die upon which the shoulder or conical surface of the roller rests when spinning up the lid or similar article, but in consequence of such shoulder being closely adjacent to the inner edge of the lid and of considerably less diameter difficulty has arisen in properly finishing this edge, and the shoulder at the point named contracts the opening in the face die and interferes with the manipulation of the rollers, and the foregoing remarks also apply to Patent No. 382,517.

By our improvement the annular shoulder being at a distance from the edge of the lid and of larger diameter than the inner edge of the lid, the difculties aforesaid are avoided and the opening in the face die corresponds or nearly so to the inner edge of the lid, and

hence such opening is as large as possible to give room for manipulating the rolls.

We claim as our inventionl. The combination in tools` for making watch case lids and similar articles, of a die corresponding internally to the exterior of the article to be produced, a die having a central opening corresponding or nearly so to the inner edge of the lid or similar article, a roller corresponding at its periphery to the interior of the article near the edges thereof, and shoulders in rigid connection with the die and at a distance from such article and by which the roll is supported while finishing the interior of such article, substantially as specified.

2. The combination with an internal die having a configuration corresponding to the exterior of the Watch oase lid or other article to be made, of a die having a central opening corresponding or nearly so to the size of the inner edge of such article, and a separate annular shoulder of larger diameter, a roll having a peripheral con figuration corresponding to the interior of the lid or similar article to be produced near the edge thereof, and an .annular shoulder of larger diameter resting upon the shoulder of the internal die while the lateral motion is being communicated to `the roll Within the lid or similar article, sub- Istantially as set forth. In Patent No. 416,331, there is a shoulder 3. The combination in tools for making Watch case lids and similar articles, of a die corresponding internally to the exterior of the article to be produced, a die having a lcentral opening extending to the inner edge :of the surface against which the inner edge of the lid or similar article is formed, and a separate odset shoulder of larger diameter, a

roller for finishing the interior of the article near the edges thereof and an annular shoullder on such roll to rest on the oset shoulder i and support the roll during its operation, substantially as set forth.

Signed by us this 21st day of May, 1894:. CHAS. WILHELM. F. ECAUBERT. Witnesses:

GEO. T. PINCKNEY, A, M. OLIVER. 

